563808645 has 12 divisors (see below), whose sum is σ = 977268396. Its totient is φ = 300697920.

The previous prime is 563808631. The next prime is 563808649. The reversal of 563808645 is 546808365.

563808645 is a `hidden beast` number, since 5 + 638 + 0 + 8 + 6 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 142491969 + 421316676 = 11937^2 + 20526^2 .

It is not a de Polignac number, because 563808645 - 2⁴ = 563808629 is a prime.

It is a super-3 number, since 3×563808645³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 12529081 = 563808645 / (5 + 6 + 3 + 8 + 0 + 8 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 563808645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563808649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6264496 + ... + 6264585.

It is an arithmetic number, because the mean of its divisors is an integer number (81439033).

Almost surely, 2^563808645 is an apocalyptic number.

It is an amenable number.

563808645 is a deficient number, since it is larger than the sum of its proper divisors (413459751).

563808645 is a wasteful number, since it uses less digits than its factorization.

563808645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529092 (or 12529089 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 563808645 is about 23744.6550827760. The cubic root of 563808645 is about 826.1214720700.

It can be divided in two parts, 563808 and 645, that added together give a triangular number (564453 = T₁₀₆₂).

The spelling of 563808645 in words is "five hundred sixty-three million, eight hundred eight thousand, six hundred forty-five".